# std::filesystem::directory_entry::is_regular_file

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< cpp‎ | filesystem‎ | directory entry

bool is_regular_file() const; | (1) | (since C++17)
bool is_regular_file( std::error_code& ec ) const noexcept; | (2) | (since C++17)

Checks whether the pointed-to object is a regular file. Effectively returns:

1) std::filesystem::is_regular_file(status()).
2) std::filesystem::is_regular_file(status(ec)).

### Parameters

ec | - | out-parameter for error reporting in the non-throwing overload

### Return value

true if the referred-to filesystem object is a regular file, false otherwise.

### Exceptions

Any overload not marked `noexcept` may throw std::bad_alloc if memory allocation fails.

1) Throws std::filesystem::filesystem_error on underlying OS API errors, constructed with p as the first path argument and the OS error code as the error code argument.
2) Sets a std::error_code& parameter to the OS API error code if an OS API call fails, and executes ec.`clear`() if no errors occur.

### Example

Run this code

    #include <filesystem>
    #include <iostream>
    #include <string>

    namespace fs = std::filesystem;

    int main(int argc, const char* argv[])
    {
        // Print out all regular files in a directory 'dir'.
        try
        {
            const auto dir{argc == 2 ? fs::path{argv[1]} : fs::current_path()};

            std::cout << "Current dir: " << dir << '\n'
                      << std::string(40, '-') << '\n';

            for (fs::directory_entry const& entry : fs::directory_iterator(dir))
                if (entry.is_regular_file())
                    std::cout << entry.path().filename() << '\n';
        }
        catch(const fs::filesystem_error& e)
        {
            std::cout << e.what() << '\n';
        }
    }

Possible output:

    Current dir: "/tmp/1588616534.9884143"
    ----------------------------------------
    "main.cpp"
    "a.out"

### See also

is_regular_file (C++17) | checks whether the argument refers to a regular file (function)

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